PLEASE NOTE: Public works projects (construction) are not included on this page. For bid information including planholder lists on public works projects, please contact ENGINEERING SERVICES at 925-756-1900 or check the Projects page of this website.
Bids and Requests for Proposal
Delta Diablo (District) uses Periscope (formerly BidSync) for most non-public works bids and RFP's. Please register here and you will automatically be notified of upcoming opportunities.
Purchasing Contact Information
2500 Pittsburg-Antioch Hwy
Antioch, CA 94509